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Finding the Fourth Proportional to 60,812.70, 91,415.19 and 56,390.85

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Solution

The fourth proportional to 60,812.70, 91,415.19 and 56,390.85 is: 84,768.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,812.70 : 91,415.19 = 56,390.85 : x
  2. Step 2: Convert to fraction form
    60,812.70/91,415.19 = 56,390.85/x
  3. Step 3: Cross multiply
    60,812.70x = 91,415.19 × 56,390.85
  4. Step 4: Simplify right side
    60,812.70x = 5,154,980,267.01
  5. Step 5: Solve for x
    x = 5,154,980,267.01/60,812.70
  6. Step 6: Final answer
    x = 84,768.15

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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.