Home / 74,890,648.40-112,335,972.60-42,642,021.20

Finding the Fourth Proportional to 74,890,648.40, 112,335,972.60 and 42,642,021.20

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Solution

The fourth proportional to 74,890,648.40, 112,335,972.60 and 42,642,021.20 is: 63,963,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,890,648.40 : 112,335,972.60 = 42,642,021.20 : x
  2. Step 2: Convert to fraction form
    74,890,648.40/112,335,972.60 = 42,642,021.20/x
  3. Step 3: Cross multiply
    74,890,648.40x = 112,335,972.60 × 42,642,021.20
  4. Step 4: Simplify right side
    74,890,648.40x = 4,790,232,925,131,819
  5. Step 5: Solve for x
    x = 4,790,232,925,131,819/74,890,648.40
  6. Step 6: Final answer
    x = 63,963,031.80

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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.