Home / 86,959.47-131,031.54-71,510.55

Finding the Fourth Proportional to 86,959.47, 131,031.54 and 71,510.55

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Solution

The fourth proportional to 86,959.47, 131,031.54 and 71,510.55 is: 107,752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,959.47 : 131,031.54 = 71,510.55 : x
  2. Step 2: Convert to fraction form
    86,959.47/131,031.54 = 71,510.55/x
  3. Step 3: Cross multiply
    86,959.47x = 131,031.54 × 71,510.55
  4. Step 4: Simplify right side
    86,959.47x = 9,370,136,699.69
  5. Step 5: Solve for x
    x = 9,370,136,699.69/86,959.47
  6. Step 6: Final answer
    x = 107,752.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.