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Finding the Fourth Proportional to 93,312.24, 128,772 and 50,870.40

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Solution

The fourth proportional to 93,312.24, 128,772 and 50,870.40 is: 70,201.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.24 : 128,772 = 50,870.40 : x
  2. Step 2: Convert to fraction form
    93,312.24/128,772 = 50,870.40/x
  3. Step 3: Cross multiply
    93,312.24x = 128,772 × 50,870.40
  4. Step 4: Simplify right side
    93,312.24x = 6,550,683,148.80
  5. Step 5: Solve for x
    x = 6,550,683,148.80/93,312.24
  6. Step 6: Final answer
    x = 70,201.76

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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.