Home / 57,055.19-78,730.09-31,557.50

Finding the Fourth Proportional to 57,055.19, 78,730.09 and 31,557.50

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Solution

The fourth proportional to 57,055.19, 78,730.09 and 31,557.50 is: 43,545.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,055.19 : 78,730.09 = 31,557.50 : x
  2. Step 2: Convert to fraction form
    57,055.19/78,730.09 = 31,557.50/x
  3. Step 3: Cross multiply
    57,055.19x = 78,730.09 × 31,557.50
  4. Step 4: Simplify right side
    57,055.19x = 2,484,524,815.18
  5. Step 5: Solve for x
    x = 2,484,524,815.18/57,055.19
  6. Step 6: Final answer
    x = 43,545.99

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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.