Home / 72,725,938.65-100,363,914.93-39,688,315.80

Finding the Fourth Proportional to 72,725,938.65, 100,363,914.93 and 39,688,315.80

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Solution

The fourth proportional to 72,725,938.65, 100,363,914.93 and 39,688,315.80 is: 54,771,032.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,938.65 : 100,363,914.93 = 39,688,315.80 : x
  2. Step 2: Convert to fraction form
    72,725,938.65/100,363,914.93 = 39,688,315.80/x
  3. Step 3: Cross multiply
    72,725,938.65x = 100,363,914.93 × 39,688,315.80
  4. Step 4: Simplify right side
    72,725,938.65x = 3,983,274,750,666,175
  5. Step 5: Solve for x
    x = 3,983,274,750,666,175/72,725,938.65
  6. Step 6: Final answer
    x = 54,771,032.52

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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.