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Finding the Fourth Proportional to 66,363.90, 91,575.54 and 40,866.18

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Solution

The fourth proportional to 66,363.90, 91,575.54 and 40,866.18 is: 56,391.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,363.90 : 91,575.54 = 40,866.18 : x
  2. Step 2: Convert to fraction form
    66,363.90/91,575.54 = 40,866.18/x
  3. Step 3: Cross multiply
    66,363.90x = 91,575.54 × 40,866.18
  4. Step 4: Simplify right side
    66,363.90x = 3,742,342,501.24
  5. Step 5: Solve for x
    x = 3,742,342,501.24/66,363.90
  6. Step 6: Final answer
    x = 56,391.24

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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.