Home / 56,307.72-77,707-31,157.22

Finding the Fourth Proportional to 56,307.72, 77,707 and 31,157.22

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Solution

The fourth proportional to 56,307.72, 77,707 and 31,157.22 is: 42,998.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,307.72 : 77,707 = 31,157.22 : x
  2. Step 2: Convert to fraction form
    56,307.72/77,707 = 31,157.22/x
  3. Step 3: Cross multiply
    56,307.72x = 77,707 × 31,157.22
  4. Step 4: Simplify right side
    56,307.72x = 2,421,134,094.54
  5. Step 5: Solve for x
    x = 2,421,134,094.54/56,307.72
  6. Step 6: Final answer
    x = 42,998.26

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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.