Home / 56,810.61-78,395.11-31,315.65

Finding the Fourth Proportional to 56,810.61, 78,395.11 and 31,315.65

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Solution

The fourth proportional to 56,810.61, 78,395.11 and 31,315.65 is: 43,213.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.61 : 78,395.11 = 31,315.65 : x
  2. Step 2: Convert to fraction form
    56,810.61/78,395.11 = 31,315.65/x
  3. Step 3: Cross multiply
    56,810.61x = 78,395.11 × 31,315.65
  4. Step 4: Simplify right side
    56,810.61x = 2,454,993,826.47
  5. Step 5: Solve for x
    x = 2,454,993,826.47/56,810.61
  6. Step 6: Final answer
    x = 43,213.65

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1.5x scale

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.