Home / 87,649.38-120,931.65-59,009.40

Finding the Fourth Proportional to 87,649.38, 120,931.65 and 59,009.40

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Solution

The fourth proportional to 87,649.38, 120,931.65 and 59,009.40 is: 81,416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,649.38 : 120,931.65 = 59,009.40 : x
  2. Step 2: Convert to fraction form
    87,649.38/120,931.65 = 59,009.40/x
  3. Step 3: Cross multiply
    87,649.38x = 120,931.65 × 59,009.40
  4. Step 4: Simplify right side
    87,649.38x = 7,136,104,107.51
  5. Step 5: Solve for x
    x = 7,136,104,107.51/87,649.38
  6. Step 6: Final answer
    x = 81,416.48

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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.