Home / 56,533.32-78,018.12-31,387.68

Finding the Fourth Proportional to 56,533.32, 78,018.12 and 31,387.68

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Solution

The fourth proportional to 56,533.32, 78,018.12 and 31,387.68 is: 43,316.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,533.32 : 78,018.12 = 31,387.68 : x
  2. Step 2: Convert to fraction form
    56,533.32/78,018.12 = 31,387.68/x
  3. Step 3: Cross multiply
    56,533.32x = 78,018.12 × 31,387.68
  4. Step 4: Simplify right side
    56,533.32x = 2,448,807,784.76
  5. Step 5: Solve for x
    x = 2,448,807,784.76/56,533.32
  6. Step 6: Final answer
    x = 43,316.19

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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.