Home / 87,291.45-120,459.02-53,356.77

Finding the Fourth Proportional to 87,291.45, 120,459.02 and 53,356.77

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Solution

The fourth proportional to 87,291.45, 120,459.02 and 53,356.77 is: 73,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,291.45 : 120,459.02 = 53,356.77 : x
  2. Step 2: Convert to fraction form
    87,291.45/120,459.02 = 53,356.77/x
  3. Step 3: Cross multiply
    87,291.45x = 120,459.02 × 53,356.77
  4. Step 4: Simplify right side
    87,291.45x = 6,427,303,957.78
  5. Step 5: Solve for x
    x = 6,427,303,957.78/87,291.45
  6. Step 6: Final answer
    x = 73,630.40

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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.