Home / 66,428,117.70-99,642,176.55-40,785,980.10

Finding the Fourth Proportional to 66,428,117.70, 99,642,176.55 and 40,785,980.10

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Solution

The fourth proportional to 66,428,117.70, 99,642,176.55 and 40,785,980.10 is: 61,178,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,117.70 : 99,642,176.55 = 40,785,980.10 : x
  2. Step 2: Convert to fraction form
    66,428,117.70/99,642,176.55 = 40,785,980.10/x
  3. Step 3: Cross multiply
    66,428,117.70x = 99,642,176.55 × 40,785,980.10
  4. Step 4: Simplify right side
    66,428,117.70x = 4,064,003,829,888,986.50
  5. Step 5: Solve for x
    x = 4,064,003,829,888,986.50/66,428,117.70
  6. Step 6: Final answer
    x = 61,178,970.15

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.