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Finding the Fourth Proportional to 61,920.65, 85,448.76 and 35,065.70

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Solution

The fourth proportional to 61,920.65, 85,448.76 and 35,065.70 is: 48,389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,920.65 : 85,448.76 = 35,065.70 : x
  2. Step 2: Convert to fraction form
    61,920.65/85,448.76 = 35,065.70/x
  3. Step 3: Cross multiply
    61,920.65x = 85,448.76 × 35,065.70
  4. Step 4: Simplify right side
    61,920.65x = 2,996,320,583.53
  5. Step 5: Solve for x
    x = 2,996,320,583.53/61,920.65
  6. Step 6: Final answer
    x = 48,389.68

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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.