Home / 87,875.86-121,280.76-53,878.34

Finding the Fourth Proportional to 87,875.86, 121,280.76 and 53,878.34

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Solution

The fourth proportional to 87,875.86, 121,280.76 and 53,878.34 is: 74,359.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,875.86 : 121,280.76 = 53,878.34 : x
  2. Step 2: Convert to fraction form
    87,875.86/121,280.76 = 53,878.34/x
  3. Step 3: Cross multiply
    87,875.86x = 121,280.76 × 53,878.34
  4. Step 4: Simplify right side
    87,875.86x = 6,534,405,214.29
  5. Step 5: Solve for x
    x = 6,534,405,214.29/87,875.86
  6. Step 6: Final answer
    x = 74,359.50

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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.