Home / 87,971.45-121,237.80-62,478.93

Finding the Fourth Proportional to 87,971.45, 121,237.80 and 62,478.93

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Solution

The fourth proportional to 87,971.45, 121,237.80 and 62,478.93 is: 86,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,971.45 : 121,237.80 = 62,478.93 : x
  2. Step 2: Convert to fraction form
    87,971.45/121,237.80 = 62,478.93/x
  3. Step 3: Cross multiply
    87,971.45x = 121,237.80 × 62,478.93
  4. Step 4: Simplify right side
    87,971.45x = 7,574,808,019.55
  5. Step 5: Solve for x
    x = 7,574,808,019.55/87,971.45
  6. Step 6: Final answer
    x = 86,105.30

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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.