Home / 71,618.09-106,901.43-66,340.13

Finding the Fourth Proportional to 71,618.09, 106,901.43 and 66,340.13

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Solution

The fourth proportional to 71,618.09, 106,901.43 and 66,340.13 is: 99,023.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,618.09 : 106,901.43 = 66,340.13 : x
  2. Step 2: Convert to fraction form
    71,618.09/106,901.43 = 66,340.13/x
  3. Step 3: Cross multiply
    71,618.09x = 106,901.43 × 66,340.13
  4. Step 4: Simplify right side
    71,618.09x = 7,091,853,980.10
  5. Step 5: Solve for x
    x = 7,091,853,980.10/71,618.09
  6. Step 6: Final answer
    x = 99,023.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.