Home / 56,307.76-77,703.60-31,157.26

Finding the Fourth Proportional to 56,307.76, 77,703.60 and 31,157.26

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Solution

The fourth proportional to 56,307.76, 77,703.60 and 31,157.26 is: 42,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,307.76 : 77,703.60 = 31,157.26 : x
  2. Step 2: Convert to fraction form
    56,307.76/77,703.60 = 31,157.26/x
  3. Step 3: Cross multiply
    56,307.76x = 77,703.60 × 31,157.26
  4. Step 4: Simplify right side
    56,307.76x = 2,421,031,268.14
  5. Step 5: Solve for x
    x = 2,421,031,268.14/56,307.76
  6. Step 6: Final answer
    x = 42,996.41

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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.