Home / 78,695.16-118,065.81-25,386.08

Finding the Fourth Proportional to 78,695.16, 118,065.81 and 25,386.08

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Solution

The fourth proportional to 78,695.16, 118,065.81 and 25,386.08 is: 38,086.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,695.16 : 118,065.81 = 25,386.08 : x
  2. Step 2: Convert to fraction form
    78,695.16/118,065.81 = 25,386.08/x
  3. Step 3: Cross multiply
    78,695.16x = 118,065.81 × 25,386.08
  4. Step 4: Simplify right side
    78,695.16x = 2,997,227,507.60
  5. Step 5: Solve for x
    x = 2,997,227,507.60/78,695.16
  6. Step 6: Final answer
    x = 38,086.55

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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.