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Finding the Fourth Proportional to 51,343.53, 70,851.54 and 28,678.01

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Solution

The fourth proportional to 51,343.53, 70,851.54 and 28,678.01 is: 39,574.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,343.53 : 70,851.54 = 28,678.01 : x
  2. Step 2: Convert to fraction form
    51,343.53/70,851.54 = 28,678.01/x
  3. Step 3: Cross multiply
    51,343.53x = 70,851.54 × 28,678.01
  4. Step 4: Simplify right side
    51,343.53x = 2,031,881,457.31
  5. Step 5: Solve for x
    x = 2,031,881,457.31/51,343.53
  6. Step 6: Final answer
    x = 39,574.24

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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.