Home / 87,703.40-121,030.72-47,417.15

Finding the Fourth Proportional to 87,703.40, 121,030.72 and 47,417.15

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Solution

The fourth proportional to 87,703.40, 121,030.72 and 47,417.15 is: 65,435.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,703.40 : 121,030.72 = 47,417.15 : x
  2. Step 2: Convert to fraction form
    87,703.40/121,030.72 = 47,417.15/x
  3. Step 3: Cross multiply
    87,703.40x = 121,030.72 × 47,417.15
  4. Step 4: Simplify right side
    87,703.40x = 5,738,931,988.88
  5. Step 5: Solve for x
    x = 5,738,931,988.88/87,703.40
  6. Step 6: Final answer
    x = 65,435.68

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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.