Home / 90,001.80-135,002.70-54,572.40

Finding the Fourth Proportional to 90,001.80, 135,002.70 and 54,572.40

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Solution

The fourth proportional to 90,001.80, 135,002.70 and 54,572.40 is: 81,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,001.80 : 135,002.70 = 54,572.40 : x
  2. Step 2: Convert to fraction form
    90,001.80/135,002.70 = 54,572.40/x
  3. Step 3: Cross multiply
    90,001.80x = 135,002.70 × 54,572.40
  4. Step 4: Simplify right side
    90,001.80x = 7,367,421,345.48
  5. Step 5: Solve for x
    x = 7,367,421,345.48/90,001.80
  6. Step 6: Final answer
    x = 81,858.60

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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.