Home / 78,386.19-108,174.33-44,401.68

Finding the Fourth Proportional to 78,386.19, 108,174.33 and 44,401.68

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Solution

The fourth proportional to 78,386.19, 108,174.33 and 44,401.68 is: 61,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,386.19 : 108,174.33 = 44,401.68 : x
  2. Step 2: Convert to fraction form
    78,386.19/108,174.33 = 44,401.68/x
  3. Step 3: Cross multiply
    78,386.19x = 108,174.33 × 44,401.68
  4. Step 4: Simplify right side
    78,386.19x = 4,803,121,984.87
  5. Step 5: Solve for x
    x = 4,803,121,984.87/78,386.19
  6. Step 6: Final answer
    x = 61,275.10

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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.