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Finding the Fourth Proportional to 78,454.64, 108,193.56 and 60,521.12

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Solution

The fourth proportional to 78,454.64, 108,193.56 and 60,521.12 is: 83,462.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,454.64 : 108,193.56 = 60,521.12 : x
  2. Step 2: Convert to fraction form
    78,454.64/108,193.56 = 60,521.12/x
  3. Step 3: Cross multiply
    78,454.64x = 108,193.56 × 60,521.12
  4. Step 4: Simplify right side
    78,454.64x = 6,547,995,427.99
  5. Step 5: Solve for x
    x = 6,547,995,427.99/78,454.64
  6. Step 6: Final answer
    x = 83,462.18

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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.