Home / 56,129.31-77,457.74-30,977.19

Finding the Fourth Proportional to 56,129.31, 77,457.74 and 30,977.19

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Solution

The fourth proportional to 56,129.31, 77,457.74 and 30,977.19 is: 42,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.31 : 77,457.74 = 30,977.19 : x
  2. Step 2: Convert to fraction form
    56,129.31/77,457.74 = 30,977.19/x
  3. Step 3: Cross multiply
    56,129.31x = 77,457.74 × 30,977.19
  4. Step 4: Simplify right side
    56,129.31x = 2,399,422,974.06
  5. Step 5: Solve for x
    x = 2,399,422,974.06/56,129.31
  6. Step 6: Final answer
    x = 42,748.13

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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.