Home / 66,538.10-99,807.15-45,542.90

Finding the Fourth Proportional to 66,538.10, 99,807.15 and 45,542.90

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Solution

The fourth proportional to 66,538.10, 99,807.15 and 45,542.90 is: 68,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,538.10 : 99,807.15 = 45,542.90 : x
  2. Step 2: Convert to fraction form
    66,538.10/99,807.15 = 45,542.90/x
  3. Step 3: Cross multiply
    66,538.10x = 99,807.15 × 45,542.90
  4. Step 4: Simplify right side
    66,538.10x = 4,545,507,051.74
  5. Step 5: Solve for x
    x = 4,545,507,051.74/66,538.10
  6. Step 6: Final answer
    x = 68,314.35

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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.