Home / 66,690.90-92,041.38-38,402.10

Finding the Fourth Proportional to 66,690.90, 92,041.38 and 38,402.10

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Solution

The fourth proportional to 66,690.90, 92,041.38 and 38,402.10 is: 52,999.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,690.90 : 92,041.38 = 38,402.10 : x
  2. Step 2: Convert to fraction form
    66,690.90/92,041.38 = 38,402.10/x
  3. Step 3: Cross multiply
    66,690.90x = 92,041.38 × 38,402.10
  4. Step 4: Simplify right side
    66,690.90x = 3,534,582,278.90
  5. Step 5: Solve for x
    x = 3,534,582,278.90/66,690.90
  6. Step 6: Final answer
    x = 52,999.47

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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.