Home / 42,138,752.40-63,219,938.40-20,574,057.60

Finding the Fourth Proportional to 42,138,752.40, 63,219,938.40 and 20,574,057.60

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Solution

The fourth proportional to 42,138,752.40, 63,219,938.40 and 20,574,057.60 is: 30,866,852.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,138,752.40 : 63,219,938.40 = 20,574,057.60 : x
  2. Step 2: Convert to fraction form
    42,138,752.40/63,219,938.40 = 20,574,057.60/x
  3. Step 3: Cross multiply
    42,138,752.40x = 63,219,938.40 × 20,574,057.60
  4. Step 4: Simplify right side
    42,138,752.40x = 1,300,690,654,110,052
  5. Step 5: Solve for x
    x = 1,300,690,654,110,052/42,138,752.40
  6. Step 6: Final answer
    x = 30,866,852.48

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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.