Home / 42,649,615.20-63,974,422.80-12,358,466.40

Finding the Fourth Proportional to 42,649,615.20, 63,974,422.80 and 12,358,466.40

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Solution

The fourth proportional to 42,649,615.20, 63,974,422.80 and 12,358,466.40 is: 18,537,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,649,615.20 : 63,974,422.80 = 12,358,466.40 : x
  2. Step 2: Convert to fraction form
    42,649,615.20/63,974,422.80 = 12,358,466.40/x
  3. Step 3: Cross multiply
    42,649,615.20x = 63,974,422.80 × 12,358,466.40
  4. Step 4: Simplify right side
    42,649,615.20x = 790,625,754,633,193.88
  5. Step 5: Solve for x
    x = 790,625,754,633,193.88/42,649,615.20
  6. Step 6: Final answer
    x = 18,537,699.60

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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.