Home / 81,316.10-112,216.79-45,509.45

Finding the Fourth Proportional to 81,316.10, 112,216.79 and 45,509.45

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Solution

The fourth proportional to 81,316.10, 112,216.79 and 45,509.45 is: 62,803.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,316.10 : 112,216.79 = 45,509.45 : x
  2. Step 2: Convert to fraction form
    81,316.10/112,216.79 = 45,509.45/x
  3. Step 3: Cross multiply
    81,316.10x = 112,216.79 × 45,509.45
  4. Step 4: Simplify right side
    81,316.10x = 5,106,923,946.36
  5. Step 5: Solve for x
    x = 5,106,923,946.36/81,316.10
  6. Step 6: Final answer
    x = 62,803.35

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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.