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Finding the Fourth Proportional to 76,472.60, 105,549.06 and 42,492.76

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Solution

The fourth proportional to 76,472.60, 105,549.06 and 42,492.76 is: 58,649.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,472.60 : 105,549.06 = 42,492.76 : x
  2. Step 2: Convert to fraction form
    76,472.60/105,549.06 = 42,492.76/x
  3. Step 3: Cross multiply
    76,472.60x = 105,549.06 × 42,492.76
  4. Step 4: Simplify right side
    76,472.60x = 4,485,070,874.81
  5. Step 5: Solve for x
    x = 4,485,070,874.81/76,472.60
  6. Step 6: Final answer
    x = 58,649.38

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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.