Home / 71,146.48-98,182.10-39,315.10

Finding the Fourth Proportional to 71,146.48, 98,182.10 and 39,315.10

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Solution

The fourth proportional to 71,146.48, 98,182.10 and 39,315.10 is: 54,254.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,146.48 : 98,182.10 = 39,315.10 : x
  2. Step 2: Convert to fraction form
    71,146.48/98,182.10 = 39,315.10/x
  3. Step 3: Cross multiply
    71,146.48x = 98,182.10 × 39,315.10
  4. Step 4: Simplify right side
    71,146.48x = 3,860,039,079.71
  5. Step 5: Solve for x
    x = 3,860,039,079.71/71,146.48
  6. Step 6: Final answer
    x = 54,254.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.