Home / 78,776,480.40-118,286,371.80-42,944,672.40

Finding the Fourth Proportional to 78,776,480.40, 118,286,371.80 and 42,944,672.40

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Solution

The fourth proportional to 78,776,480.40, 118,286,371.80 and 42,944,672.40 is: 64,483,326.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,776,480.40 : 118,286,371.80 = 42,944,672.40 : x
  2. Step 2: Convert to fraction form
    78,776,480.40/118,286,371.80 = 42,944,672.40/x
  3. Step 3: Cross multiply
    78,776,480.40x = 118,286,371.80 × 42,944,672.40
  4. Step 4: Simplify right side
    78,776,480.40x = 5,079,769,486,335,598
  5. Step 5: Solve for x
    x = 5,079,769,486,335,598/78,776,480.40
  6. Step 6: Final answer
    x = 64,483,326.25

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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.