Home / 77,381.53-116,105.10-42,280.18

Finding the Fourth Proportional to 77,381.53, 116,105.10 and 42,280.18

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Solution

The fourth proportional to 77,381.53, 116,105.10 and 42,280.18 is: 63,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,381.53 : 116,105.10 = 42,280.18 : x
  2. Step 2: Convert to fraction form
    77,381.53/116,105.10 = 42,280.18/x
  3. Step 3: Cross multiply
    77,381.53x = 116,105.10 × 42,280.18
  4. Step 4: Simplify right side
    77,381.53x = 4,908,944,236.66
  5. Step 5: Solve for x
    x = 4,908,944,236.66/77,381.53
  6. Step 6: Final answer
    x = 63,438.19

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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.