Home / 64,970.16-89,656.28-40,784.14

Finding the Fourth Proportional to 64,970.16, 89,656.28 and 40,784.14

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Solution

The fourth proportional to 64,970.16, 89,656.28 and 40,784.14 is: 56,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,970.16 : 89,656.28 = 40,784.14 : x
  2. Step 2: Convert to fraction form
    64,970.16/89,656.28 = 40,784.14/x
  3. Step 3: Cross multiply
    64,970.16x = 89,656.28 × 40,784.14
  4. Step 4: Simplify right side
    64,970.16x = 3,656,554,275.40
  5. Step 5: Solve for x
    x = 3,656,554,275.40/64,970.16
  6. Step 6: Final answer
    x = 56,280.52

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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.