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Finding the Fourth Proportional to 93,439.65, 128,946.93 and 51,000.90

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Solution

The fourth proportional to 93,439.65, 128,946.93 and 51,000.90 is: 70,381.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,439.65 : 128,946.93 = 51,000.90 : x
  2. Step 2: Convert to fraction form
    93,439.65/128,946.93 = 51,000.90/x
  3. Step 3: Cross multiply
    93,439.65x = 128,946.93 × 51,000.90
  4. Step 4: Simplify right side
    93,439.65x = 6,576,409,482.24
  5. Step 5: Solve for x
    x = 6,576,409,482.24/93,439.65
  6. Step 6: Final answer
    x = 70,381.36

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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.