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Finding the Fourth Proportional to 56,762.70, 78,350.70 and 36,620.16

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Solution

The fourth proportional to 56,762.70, 78,350.70 and 36,620.16 is: 50,547.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,762.70 : 78,350.70 = 36,620.16 : x
  2. Step 2: Convert to fraction form
    56,762.70/78,350.70 = 36,620.16/x
  3. Step 3: Cross multiply
    56,762.70x = 78,350.70 × 36,620.16
  4. Step 4: Simplify right side
    56,762.70x = 2,869,215,170.11
  5. Step 5: Solve for x
    x = 2,869,215,170.11/56,762.70
  6. Step 6: Final answer
    x = 50,547.55

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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.