Home / 56,638.14-78,165.61-31,148.99

Finding the Fourth Proportional to 56,638.14, 78,165.61 and 31,148.99

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Solution

The fourth proportional to 56,638.14, 78,165.61 and 31,148.99 is: 42,988.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,638.14 : 78,165.61 = 31,148.99 : x
  2. Step 2: Convert to fraction form
    56,638.14/78,165.61 = 31,148.99/x
  3. Step 3: Cross multiply
    56,638.14x = 78,165.61 × 31,148.99
  4. Step 4: Simplify right side
    56,638.14x = 2,434,779,804.23
  5. Step 5: Solve for x
    x = 2,434,779,804.23/56,638.14
  6. Step 6: Final answer
    x = 42,988.34

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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.