Home / 56,261.56-77,638.86-31,111.48

Finding the Fourth Proportional to 56,261.56, 77,638.86 and 31,111.48

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Solution

The fourth proportional to 56,261.56, 77,638.86 and 31,111.48 is: 42,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,261.56 : 77,638.86 = 31,111.48 : x
  2. Step 2: Convert to fraction form
    56,261.56/77,638.86 = 31,111.48/x
  3. Step 3: Cross multiply
    56,261.56x = 77,638.86 × 31,111.48
  4. Step 4: Simplify right side
    56,261.56x = 2,415,459,840.11
  5. Step 5: Solve for x
    x = 2,415,459,840.11/56,261.56
  6. Step 6: Final answer
    x = 42,932.69

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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.