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Finding the Fourth Proportional to 72,356.10, 108,534.15 and 65,904.90

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Solution

The fourth proportional to 72,356.10, 108,534.15 and 65,904.90 is: 98,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,356.10 : 108,534.15 = 65,904.90 : x
  2. Step 2: Convert to fraction form
    72,356.10/108,534.15 = 65,904.90/x
  3. Step 3: Cross multiply
    72,356.10x = 108,534.15 × 65,904.90
  4. Step 4: Simplify right side
    72,356.10x = 7,152,932,302.34
  5. Step 5: Solve for x
    x = 7,152,932,302.34/72,356.10
  6. Step 6: Final answer
    x = 98,857.35

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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.