Home / 78,938,951.71-118,399,382.27-20,652,256.53

Finding the Fourth Proportional to 78,938,951.71, 118,399,382.27 and 20,652,256.53

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Solution

The fourth proportional to 78,938,951.71, 118,399,382.27 and 20,652,256.53 is: 30,976,018.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938,951.71 : 118,399,382.27 = 20,652,256.53 : x
  2. Step 2: Convert to fraction form
    78,938,951.71/118,399,382.27 = 20,652,256.53/x
  3. Step 3: Cross multiply
    78,938,951.71x = 118,399,382.27 × 20,652,256.53
  4. Step 4: Simplify right side
    78,938,951.71x = 2,445,214,415,607,758.50
  5. Step 5: Solve for x
    x = 2,445,214,415,607,758.50/78,938,951.71
  6. Step 6: Final answer
    x = 30,976,018.34

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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.