Home / 87,829.34-121,159.67-53,364.76

Finding the Fourth Proportional to 87,829.34, 121,159.67 and 53,364.76

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Solution

The fourth proportional to 87,829.34, 121,159.67 and 53,364.76 is: 73,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,829.34 : 121,159.67 = 53,364.76 : x
  2. Step 2: Convert to fraction form
    87,829.34/121,159.67 = 53,364.76/x
  3. Step 3: Cross multiply
    87,829.34x = 121,159.67 × 53,364.76
  4. Step 4: Simplify right side
    87,829.34x = 6,465,656,141.51
  5. Step 5: Solve for x
    x = 6,465,656,141.51/87,829.34
  6. Step 6: Final answer
    x = 73,616.13

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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.