Home / 70,124,051.91-105,186,078.78-19,006,070.72

Finding the Fourth Proportional to 70,124,051.91, 105,186,078.78 and 19,006,070.72

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Solution

The fourth proportional to 70,124,051.91, 105,186,078.78 and 19,006,070.72 is: 28,509,106.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,124,051.91 : 105,186,078.78 = 19,006,070.72 : x
  2. Step 2: Convert to fraction form
    70,124,051.91/105,186,078.78 = 19,006,070.72/x
  3. Step 3: Cross multiply
    70,124,051.91x = 105,186,078.78 × 19,006,070.72
  4. Step 4: Simplify right side
    70,124,051.91x = 1,999,174,052,315,136.50
  5. Step 5: Solve for x
    x = 1,999,174,052,315,136.50/70,124,051.91
  6. Step 6: Final answer
    x = 28,509,106.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.