Home / 56,420.13-77,859.30-30,927.93

Finding the Fourth Proportional to 56,420.13, 77,859.30 and 30,927.93

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Solution

The fourth proportional to 56,420.13, 77,859.30 and 30,927.93 is: 42,680.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,420.13 : 77,859.30 = 30,927.93 : x
  2. Step 2: Convert to fraction form
    56,420.13/77,859.30 = 30,927.93/x
  3. Step 3: Cross multiply
    56,420.13x = 77,859.30 × 30,927.93
  4. Step 4: Simplify right side
    56,420.13x = 2,408,026,980.25
  5. Step 5: Solve for x
    x = 2,408,026,980.25/56,420.13
  6. Step 6: Final answer
    x = 42,680.28

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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.