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Finding the Fourth Proportional to 76,691.40, 115,014.40 and 34,547.12

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Solution

The fourth proportional to 76,691.40, 115,014.40 and 34,547.12 is: 51,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,691.40 : 115,014.40 = 34,547.12 : x
  2. Step 2: Convert to fraction form
    76,691.40/115,014.40 = 34,547.12/x
  3. Step 3: Cross multiply
    76,691.40x = 115,014.40 × 34,547.12
  4. Step 4: Simplify right side
    76,691.40x = 3,973,416,278.53
  5. Step 5: Solve for x
    x = 3,973,416,278.53/76,691.40
  6. Step 6: Final answer
    x = 51,810.45

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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.