Home / 56,387.81-77,817.71-31,235.69

Finding the Fourth Proportional to 56,387.81, 77,817.71 and 31,235.69

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Solution

The fourth proportional to 56,387.81, 77,817.71 and 31,235.69 is: 43,106.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,387.81 : 77,817.71 = 31,235.69 : x
  2. Step 2: Convert to fraction form
    56,387.81/77,817.71 = 31,235.69/x
  3. Step 3: Cross multiply
    56,387.81x = 77,817.71 × 31,235.69
  4. Step 4: Simplify right side
    56,387.81x = 2,430,689,866.07
  5. Step 5: Solve for x
    x = 2,430,689,866.07/56,387.81
  6. Step 6: Final answer
    x = 43,106.65

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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.