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Finding the Fourth Proportional to 60,419.87, 83,345.83 and 56,143.45

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Solution

The fourth proportional to 60,419.87, 83,345.83 and 56,143.45 is: 77,446.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,419.87 : 83,345.83 = 56,143.45 : x
  2. Step 2: Convert to fraction form
    60,419.87/83,345.83 = 56,143.45/x
  3. Step 3: Cross multiply
    60,419.87x = 83,345.83 × 56,143.45
  4. Step 4: Simplify right side
    60,419.87x = 4,679,321,741.87
  5. Step 5: Solve for x
    x = 4,679,321,741.87/60,419.87
  6. Step 6: Final answer
    x = 77,446.74

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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.