Home / 56,282.04-77,665.80-30,783.60

Finding the Fourth Proportional to 56,282.04, 77,665.80 and 30,783.60

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Solution

The fourth proportional to 56,282.04, 77,665.80 and 30,783.60 is: 42,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,282.04 : 77,665.80 = 30,783.60 : x
  2. Step 2: Convert to fraction form
    56,282.04/77,665.80 = 30,783.60/x
  3. Step 3: Cross multiply
    56,282.04x = 77,665.80 × 30,783.60
  4. Step 4: Simplify right side
    56,282.04x = 2,390,832,920.88
  5. Step 5: Solve for x
    x = 2,390,832,920.88/56,282.04
  6. Step 6: Final answer
    x = 42,479.50

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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.