Home / 86,931.36-130,466.16-74,595.60

Finding the Fourth Proportional to 86,931.36, 130,466.16 and 74,595.60

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Solution

The fourth proportional to 86,931.36, 130,466.16 and 74,595.60 is: 111,952.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,931.36 : 130,466.16 = 74,595.60 : x
  2. Step 2: Convert to fraction form
    86,931.36/130,466.16 = 74,595.60/x
  3. Step 3: Cross multiply
    86,931.36x = 130,466.16 × 74,595.60
  4. Step 4: Simplify right side
    86,931.36x = 9,732,201,484.90
  5. Step 5: Solve for x
    x = 9,732,201,484.90/86,931.36
  6. Step 6: Final answer
    x = 111,952.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.