Home / 90,534.72-135,752.40-31,365.12

Finding the Fourth Proportional to 90,534.72, 135,752.40 and 31,365.12

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Solution

The fourth proportional to 90,534.72, 135,752.40 and 31,365.12 is: 47,030.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,534.72 : 135,752.40 = 31,365.12 : x
  2. Step 2: Convert to fraction form
    90,534.72/135,752.40 = 31,365.12/x
  3. Step 3: Cross multiply
    90,534.72x = 135,752.40 × 31,365.12
  4. Step 4: Simplify right side
    90,534.72x = 4,257,890,316.29
  5. Step 5: Solve for x
    x = 4,257,890,316.29/90,534.72
  6. Step 6: Final answer
    x = 47,030.47

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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.