Home / 56,328.16-77,728.64-31,178.08

Finding the Fourth Proportional to 56,328.16, 77,728.64 and 31,178.08

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Solution

The fourth proportional to 56,328.16, 77,728.64 and 31,178.08 is: 43,023.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,328.16 : 77,728.64 = 31,178.08 : x
  2. Step 2: Convert to fraction form
    56,328.16/77,728.64 = 31,178.08/x
  3. Step 3: Cross multiply
    56,328.16x = 77,728.64 × 31,178.08
  4. Step 4: Simplify right side
    56,328.16x = 2,423,429,756.21
  5. Step 5: Solve for x
    x = 2,423,429,756.21/56,328.16
  6. Step 6: Final answer
    x = 43,023.41

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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.