Home / 56,810.10-78,403.80-34,156.50

Finding the Fourth Proportional to 56,810.10, 78,403.80 and 34,156.50

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Solution

The fourth proportional to 56,810.10, 78,403.80 and 34,156.50 is: 47,139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.10 : 78,403.80 = 34,156.50 : x
  2. Step 2: Convert to fraction form
    56,810.10/78,403.80 = 34,156.50/x
  3. Step 3: Cross multiply
    56,810.10x = 78,403.80 × 34,156.50
  4. Step 4: Simplify right side
    56,810.10x = 2,677,999,394.70
  5. Step 5: Solve for x
    x = 2,677,999,394.70/56,810.10
  6. Step 6: Final answer
    x = 47,139.49

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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.