Home / 87,890.32-121,288.35-47,603.98

Finding the Fourth Proportional to 87,890.32, 121,288.35 and 47,603.98

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Solution

The fourth proportional to 87,890.32, 121,288.35 and 47,603.98 is: 65,693.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.32 : 121,288.35 = 47,603.98 : x
  2. Step 2: Convert to fraction form
    87,890.32/121,288.35 = 47,603.98/x
  3. Step 3: Cross multiply
    87,890.32x = 121,288.35 × 47,603.98
  4. Step 4: Simplify right side
    87,890.32x = 5,773,808,187.63
  5. Step 5: Solve for x
    x = 5,773,808,187.63/87,890.32
  6. Step 6: Final answer
    x = 65,693.33

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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.