Home / 71,386.81-107,128.65-38,130.76

Finding the Fourth Proportional to 71,386.81, 107,128.65 and 38,130.76

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Solution

The fourth proportional to 71,386.81, 107,128.65 and 38,130.76 is: 57,222.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,386.81 : 107,128.65 = 38,130.76 : x
  2. Step 2: Convert to fraction form
    71,386.81/107,128.65 = 38,130.76/x
  3. Step 3: Cross multiply
    71,386.81x = 107,128.65 × 38,130.76
  4. Step 4: Simplify right side
    71,386.81x = 4,084,896,842.27
  5. Step 5: Solve for x
    x = 4,084,896,842.27/71,386.81
  6. Step 6: Final answer
    x = 57,222.01

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1.5x scale

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.