Home / 87,263.31-120,420.15-53,328.60

Finding the Fourth Proportional to 87,263.31, 120,420.15 and 53,328.60

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Solution

The fourth proportional to 87,263.31, 120,420.15 and 53,328.60 is: 73,591.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,263.31 : 120,420.15 = 53,328.60 : x
  2. Step 2: Convert to fraction form
    87,263.31/120,420.15 = 53,328.60/x
  3. Step 3: Cross multiply
    87,263.31x = 120,420.15 × 53,328.60
  4. Step 4: Simplify right side
    87,263.31x = 6,421,838,011.29
  5. Step 5: Solve for x
    x = 6,421,838,011.29/87,263.31
  6. Step 6: Final answer
    x = 73,591.50

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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.