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Finding the Fourth Proportional to 93,221.57, 128,646 and 50,779.19

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Solution

The fourth proportional to 93,221.57, 128,646 and 50,779.19 is: 70,075.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,221.57 : 128,646 = 50,779.19 : x
  2. Step 2: Convert to fraction form
    93,221.57/128,646 = 50,779.19/x
  3. Step 3: Cross multiply
    93,221.57x = 128,646 × 50,779.19
  4. Step 4: Simplify right side
    93,221.57x = 6,532,539,998.36
  5. Step 5: Solve for x
    x = 6,532,539,998.36/93,221.57
  6. Step 6: Final answer
    x = 70,075.41

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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.