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Finding the Fourth Proportional to 62,780.84, 94,603.12 and 51,931.70

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Solution

The fourth proportional to 62,780.84, 94,603.12 and 51,931.70 is: 78,254.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,780.84 : 94,603.12 = 51,931.70 : x
  2. Step 2: Convert to fraction form
    62,780.84/94,603.12 = 51,931.70/x
  3. Step 3: Cross multiply
    62,780.84x = 94,603.12 × 51,931.70
  4. Step 4: Simplify right side
    62,780.84x = 4,912,900,846.90
  5. Step 5: Solve for x
    x = 4,912,900,846.90/62,780.84
  6. Step 6: Final answer
    x = 78,254.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.