Home / 56,818,042.56-78,408,864.95-30,712,560.80

Finding the Fourth Proportional to 56,818,042.56, 78,408,864.95 and 30,712,560.80

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Solution

The fourth proportional to 56,818,042.56, 78,408,864.95 and 30,712,560.80 is: 42,383,315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,818,042.56 : 78,408,864.95 = 30,712,560.80 : x
  2. Step 2: Convert to fraction form
    56,818,042.56/78,408,864.95 = 30,712,560.80/x
  3. Step 3: Cross multiply
    56,818,042.56x = 78,408,864.95 × 30,712,560.80
  4. Step 4: Simplify right side
    56,818,042.56x = 2,408,137,031,490,257
  5. Step 5: Solve for x
    x = 2,408,137,031,490,257/56,818,042.56
  6. Step 6: Final answer
    x = 42,383,315.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.